are pop unders from similar websites risky for adsense related sites? Is there any chance of getting banned from adsense for this?
I'm not sure, but if I remember correctly ive heard of others using pop unders. do a quick search and youll probably find something.
Why didn't you read the adsense tos: hteps://www.google.com/adsense/support/bin/answer.py?hl=en&answer=48182